Popularity

Guillaume is a rare given name for men but a very popular last name for both adults and children (#15813 out of 88799, Top 18%). (2000 U.S. Census)

Below is a graphed analysis of the usage of Guillaume and corresponding names. Bill, Billie, Billy(#794 in 2014), Guillermo(#678), Liam(#2), Wiley, Wilhelm, Will(#763), William(#5), Williams, Willie(#722), Willis, Willy, Wilmer and Wilson(#594) are the popular alternative forms of Guillaume (#unlisted). Usage of this boy name reached its peak during 1920-1929 and is now much lower, with versions such as Billy, Guillermo, Will, Willie and Wilson falling out of fashion. Liam(#2) is the most trendy boy name in this list. (Top 1000 Baby Names Records, 2014)